diff --git a/src/query/inc/qExecutor.h b/src/query/inc/qExecutor.h
index 001af0825e8da959c180464b8a11f049d550a2c7..0d8870a377fb76803aee5f2a00d94454a35bea87 100644
--- a/src/query/inc/qExecutor.h
+++ b/src/query/inc/qExecutor.h
@@ -102,7 +102,7 @@ typedef struct SGroupResInfo {
  */
 typedef struct SRspResultInfo {
   int64_t total;      // total generated result size in rows
-  int64_t capacity;   // capacity of current result output buffer
+  int32_t capacity;   // capacity of current result output buffer
   int32_t threshold;  // result size threshold in rows.
 } SRspResultInfo;